package ooday01;
/** 构造方法的测试类 */
public class ConsDemo {
    public static void main(String[] args) {
        Student s = new Student();
        s.sayHi();
        Student zg = new Student("张光",22,"jsd2310","001");
        zg.sayHi();
        Student ll = new Student("李林",23,"jsd2310","002");
        ll.sayHi();
    }
}









